Consumer Reports' latest issue stacks the U.S. cellular carriers up against one another, and the most notable finding is that in every category ranked, AT&T was either worst or tied for worst. The not-for-profit consumer publication tested voice, data, value, and customer service coverage, as well as the latest smartphones on each platform, which you can see in the latest issue. Do Consumer Reports' rankings look right to you? [Consumer Reports via Boy Genius Report]